Teeth whitening is a procedure that aims to lighten the color of teeth and enhance their appearance by reducing or eliminating stains and discolorations on the tooth surface. It is suitable for individuals dissatisfied with their teeth color or having stains, as long as their dental and gum health is assessed by a dentist. However, it is not recommended for pregnant or nursing women, children under 16, and individuals with gum disease or severe enamel erosion. The number of teeth whitening sessions depends on the method used, and it can be completed in a few sessions or a single session with accelerated methods. The process involves in-office or at-home methods, with the former utilizing a powerful whitening gel and special light, and the latter using custom-made trays and a low-concentration gel provided by the dentist. Temporary sensitivity may occur due to microscopic enamel pores opening during the procedure, but dentists employ techniques to minimize it. After whitening, avoiding colored beverages and smoking helps maintain results, along with good dental care, using recommended products, and regular check-ups to address any issues that may arise.